Renewable cutting edge for plowshares

Claim 1

A RENEWABLE CUTTING EDGE FOR A PLOWSHARE COMPRISING A FLEXIBLE, RESILIENT, ELONGATED BLADE HAVING A SUBSTANTIAL WIDTH IN RELATION TO ITS THICKNESS AND A SHARPENED EDGE, A FRONT POCKET FORMED AT THE FORWARD END OF SAID BLADE FOR RECEIVING THE POINT OF THE PLOWSHARE, AND A REAR CLAMP FORMED AT THE REAR PORTION OF SAID BLADE FOR RECEIVING THE HEEL OF THE PLOWSHARE, SAID FRONT POCKET AND REAR CLAMP COOPERATING WITH THE POINT AND HEEL OF THE PLOWSHARE TO SECURE THE FORWARD AND REAR ENDS OF THE BLADE AGAINST TRANSVERSE MOVEMENT RELATIVE TO THE PLOWSHARE WITH THE INNER FACE OF SAID BLADE AGAINST THE OUTER FACE OF THE PLOWSHARE AND SAID SHARPENED EDGE EXTENDING BEYOND THE ORIGINAL CUTTING EDGE OF THE PLOWSHARE, SAID FRONT POCKET ALSO COOPERATING WITH SAID POINT TO RESTRAIN SAID BLADE AGAINST REARWARD LONGITUDINAL MOVEMENT RELATIVE TO THE PLOWSHARE DURING FORWARD MOVEMENT OF THE LATTER THROUGH THE SOIL, SAID BLADE HAVING A LONG SUBSTANTIALLY SMOOTH AND CONTINUOUS INTERMEDIATE PORTION BETWEEN SAID FRONT POCKET AND SAID REAR CLAMP TO PROVIDE AN OVERALL CUTTING PROFILE CLOSELY APPROXIMATING THE ORIGINAL CUTTING EDGE OF THE PLOWSHARE WITH WHICH IT IS USED, SAID INTERMEDIATE PORTION OF SAID BLADE HAVING A NORMAL CURVATURE IN A DIRECTION NORMAL TO THE PLANE OF SAID BLADE TO PROVIDE A NORMALLY CONVEX REAR FACE, SAID CURVATURE COMMENCING NEAR SAID FORWARD END AND BEING SUBSTANTIALLY GREATER THAN THE CURVATURE OF THE OUTER FACE OF THE PLOWSHARE TO URGE THE REAR FACE OF SAID INTERMEDIATE PORTION BY SPRING ACTION INTO SNUG CONTINUOUS ENGAGMENT THROUGHOUT ITS LENGTH WITH THE OUTER FACE OF THE PLOWSHARE WHEN SAID FRONT POCKET AND REAR CLAMP ARE ENGAGED WITH THE PLOWSHARE SO AS TO RESTRAIN THE ENTRANCE OF SOIL BETWEEN THE REAR FACE OF SAID BLADE AND THE FRONT FACE OF THE PLOWSHARE, SAID BLADE BEING FREE OF POSITIVE CONNECTION TO THE PLOWSHARE BETWEEN SAID FRONT POCKET AND REAR CLAMP SO THAT SAID INTERMEDIATE PORTION IS RESTRAINED AGAINST MOVEMENT AWAY FROM THE PLOWSHARE SOLELY BY SAID SPRING ACTION.